14.7.3.2SCOPE:This rule applies to all construction,
alteration, relocation, enlargement, replacement, repair, equipment, use and occupancy, location, removal
and demolition of all detached one- and two-family dwellings and multiple
single-family dwellings (townhouses) not more than three stories high with
separate means of egress, and their accessory structures that is performed in
New Mexico on or after November 15, 2016, and that is subject to the
jurisdiction of CID, unless performed pursuant to a permit for which an
application was received by CID before that date.Any repair, alteration or addition to such
building that is associated with a change of occupancy, and any construction
not addressed in the NMRBC, shall be subject to and shall comply with the
NMCBC.

[14.7.3.2
NMAC - Rp, 14.7.3.2 NMAC, 11/15/2016]

14.7.3.3STATUTORY AUTHORITY:Section 60-13-9 and 60-13-44 NMSA 1978.

[14.7.3.3
NMAC - Rp, 14.7.3.3 NMAC, 11/15/2016]

14.7.3.4DURATION:Permanent.

[14.7.3.4
NMAC - Rp, 14.7.3.4 NMAC, 11/15/2016]

14.7.3.5EFFECTIVE DATE:November 15, 2016, unless a
later date is cited at the end of a section.

[14.7.3.5
NMAC - Rp, 14.7.3.5 NMAC, 11/15/2016]

[From the
date of publication of this rule in the New Mexico register, until July 1, 2017, permits may be issued under either the
previously-adopted rule, or this rule.After July 1, 2017, permits may be issued only under this rule.]

14.7.3.6OBJECTIVE:The purpose of this rule is to establish minimum
standards for the general construction of residential buildings in New Mexico.

[14.7.3.6
NMAC - Rp, 14.7.3.6 NMAC, 11/15/2016]

14.7.3.7DEFINITIONS:See 14.5.1 NMAC, General Provisions
and Chapter 2 of the 2015 International Residential Code (IRC) as amended in
14.7.3.10 NMAC.

[14.7.3.7
NMAC - Rp, 14.7.3.7 NMAC, 11/15/2016]

14.7.3.8ADOPTION OF THE 2015INTERNATIONAL RESIDENTIAL
CODE:

A.This rule adopts by reference the 2015 International Residential
Code, as amended by this rule.

B.In this rule, each provision is numbered to correspond
with the numbering of the 2015 International Residential Code.

[14.7.3.8
NMAC - Rp, 14.7.3.8 NMAC, 11/15/2016]

14.7.3.9CHAPTER 1 - ADMINISTRATION:

A.Section R101 - Title, scope and purpose.

(1)R101.1 Title.Delete
this section of the IRC and substitute:This code shall be known as the 2015 New Mexico residential building
code (NMRBC).

(2)R101.2 Scope.Delete this section of the IRC and see 14.7.3.2 NMAC, Scope and add the
following:Exception. Live/work units complying with the requirements of Section 419 of
the International Building Code shall be permitted to be built as one-
and two-family dwellings or townhouses.Fire suppression required by Section 419.5 of the International
Building Code when constructed under the International Residential Code
for One- and Two-family Dwellings shall conform to Section P2904 of the Residential
Building Code.A home office or
business not utilizing hazardous materials as defined in the international
building code with a work area less than 300 sq. ft. is not a live/work unit
subject to the requirements of the International Building Code.A home office in dwelling units exceeding
3000 sq. ft. may occupy up to ten percent of the floor area.

(3)R101.3Purpose.See 14.7.3.6 NMAC, Objective.

B.Section R102 - Applicability.

(1)R102.1 General.Delete this section of the
IRC and see 14.5.1 NMAC, General Provisions.

(2)R102.2 Other laws.Delete this section of the IRC and see 14.5.1
NMAC, General Provisions.

(3)R102.3 Application of references.Delete this section of the IRC and see 14.5.1
NMAC, General Provisions.

(4)R102.4 Referenced codes and standards.Delete this section of the IRC and substitute
the following: The codes referenced in the NMRBC are set forth below. See also
14.5.1 NMAC, General Provisions.

(a)Electrical.The NMEC applies to all
electrical wiring as defined in Section 60-13-32 NMSA 1978.All references in the IRC to the international
code council (ICC) electrical code are deemed references to the NMEC.

(b)Gas.The NMMC applies to “gas fittings” as that term is defined in Section 60-13-32 NMSA 1978.All references in the IRC to the
international mechanical code are deemed references to the NMMC.Gas piping, systems and appliances for use
with liquefied propane gas (LPG), or compressed natural gas (CNG), shall be
governed by the LPG standards (Section 70-5-1 et seq. NMSA 1978, LPG and CNG Act, and the rules promulgated
pursuant thereto, 19.15.4.1 through 19.15.4.24 NMAC.)

(c)Mechanical.The NMMC applies to the installation, repair, and replacement of mechanical
systems including equipment, appliances, fixtures, fittings or appurtenances
including ventilating, heating, cooling, air conditioning, and refrigeration
systems, incinerators, and other energy related systems.All references in the IRC to the
international mechanical code are deemed references to the NMMC.

(d)Plumbing.The NMPC applies to the installation, alterations, repairs, and
replacement of plumbing systems, including equipment, appliances, fixtures,
fittings, and appurtenances, and where connected to a water or sewage system
and all aspects of a medical gas system.All references in the IRC to the international plumbing code are deemed
references to the NMPC.

(e)Energy.The NMECC applies to all energy-efficiency-related requirements for the
design and construction of buildings that are subject to the New Mexico
construction codes.All references in
the IRC to the international energy code are deemed references to the NMECC.

(5)R102.5 Appendices.This rule adopts the following
appendices as amended herein.

(a)Appendix H - Patio covers.

(b)Appendix J - Existing buildings.

(c)Appendix K - Sound transmission.

(d)Appendix R – Light straw clay construction.

(e)Appendix S – Strawbale
construction.

(f)Appendix Q – Tiny Houses.

(6)R102.6 Partial Invalidity.Delete this section of the
IRC and see 14.5.1 NMAC, General Provisions.

(7)R102.7 Existing Structures.See this section, and Subsection
R102.7.1, Additions, Alterations or Repairs, of the IRC, except that the
references to the International Property Maintenance Code and the International
Fire Code are deleted.

C.Section R103 - Department
of Building Safety.Delete
this section of the IRC.

D.Section R104 - Duties and Powers of Building Official.Delete
this section of the IRC and see 14.5.1 NMAC, General Provisions.

E.Section R105 - Permits.Delete this section of the IRC and see
14.5.2 NMAC, Permits.

F.Section R106 -
Construction Documents.Delete this provision of the IRC
and see 14.5.2 NMAC, Permits.

G.Section R107 -
Temporary Structures and Uses.Delete
this section of the IRC and see 14.5.2 NMAC, Permits.

H.Section R108 - Fees.Delete this section of the IRC and see 14.5.5 NMAC, Fees.

I.Section R109 -
Inspections.Delete this section of the IRC
and see 14.5.3 NMAC, Inspections.

J.Section R110 -
Certificate of Occupancy.Delete this section of the IRC
and see 14.5.3 NMAC, Inspections.

K.Section R111 - Service Utilities.Delete this section of the IRC and see 14.5.3 NMAC, Inspections.

L.Section R112 - Board of Appeals.Delete this section of the IRC and see 14.5.1 NMAC, General
Provisions.

M.Section R113 -
Violations.Delete this section of the IRC and see CILA
60-13-1 et seq., and 14.5.3 NMAC, Inspections.

N.Section R114 -
Stop Work Order.Delete this section of the IRC
and see 14.5.3 NMAC, Inspections.

[14.7.3.9
NMAC - Rp, 14.7.3.9 NMAC, 11/15/2016;
A, 01/15/2018]

14.7.3.10CHAPTER 2 - DEFINITIONS:

A.Section R101 General.

(1)R201.1, R201.2 and R201.4.See
these sections of the IRC.

(2)R201.3 Terms defined
in other codes.Delete this section of the IRC and substitute
the following provision: Defined terms not listed in this rule have the
meanings given in 14.5.1.7 NMAC, General Provisions, and in the other New
Mexico codes.

B.Section R202 Definitions.

(1)Board of appeals.Delete this definition and see 14.5.1 NMAC, General Provisions.

(2)Building
official.Delete this definition and see 14.5.1 NMAC,
General Provisions.

(3)Design professional
and registered design professional.Delete these definitions and see 14.5.1 NMAC,
General Provisions.

(4)Earthen building materials has the meaning given in 14.7.4 NMAC, 2015 adopted New Mexico Earthen
Building Materials Code.

(5)Exterior finish coating means a single coat of plaster, cementitious or other approved
material applied to a concrete or masonry surface for cosmetic purposes only.

(6)ICC means
the international code council.

(7)Manufactured home.Delete this definition from the IRC.

(8)Sleeping room means a room designated as a sleeping room
or bedroom on the plans.

(9)Unbalance backfill height is
the difference in height between the exterior finish ground level and the lower
of the top of the concrete footing that supports the foundation wall, retaining
wall or the interior finished ground level.Where an interior concrete slab on grade is provided and is in contact
with the interior surface of the foundation wall, the unbalanced backfill
height is permitted to be measured from the exterior finished ground level to
the top of the interior concrete slab.

(10)Decorative coating.A
single coat of plaster, cementitious or other approved material applied to a
concrete or masonry surface for cosmetic purposes only.

(11)All
other terms defined in this section of the IRC have the meanings given in that
section.

(1)Section R301.2.1 Climatic and Geographic
Design Criteria.Amend footnote “f”
as follows: The jurisdiction shall fill in this part of
the table with the seismic design category determined from Section R301.2.2.1
or information from the U.S.G.S. software “Design Values for Buildings” found
online.

(2)Section 301.2.2 Seismic Provisions.Add the following sentence to end the exception:Buildings in which earthen building materials
form the bearing wall system, that are located in seismic design categories A,
B, C, Do and D1 are exempt from the seismic requirements of this
code.

(3)Section R301.2.2.1. Determination of Seismic Design Category.Add the following text at the end of the
section:or
information from the U.S.G.S. software “Design Values for Buildings” found
online.

B.Section R302.See this section of the IRCexcept as provided below.

(1)Section R302.1.See this section of the IRC except as follows:
Add the following exception to 302.1 exception #6 exterior walls will read as
follows: Where zoning or perpetual, platted, and recorded easements create a
non-buildable minimum fire separation distance of at least 10 feet between
structures on adjacent properties. The “one hour” “fire resistive” rating shall
not apply on the underside of the projections that project a maximum of 24
inches. Add a new subsection as follows: SectionR302.1.1 Zero lot line separation.Where perpetual, platted, and
recorded easements create a non-buildable minimum fire separation distance of
at least six feet between structures on adjacent properties, the one-hour
fire-resistive rating shall not apply.Delete Table R302.1 (1) without substitution. Delete title of
Table R302.1 (2) and replace with following: TableR302.1 (1) Exterior
walls.

(2)R302.2 Townhouses.Add the following sentence to the beginning of
the exception:The following exception
applies if the townhouse has an automatic residential fire sprinkler
system.Delete the text “Chapters 34
through 43” from the second to the last sentence and replace with
currently-adopted electrical code.

(3)Section
R302.5.1 Opening
Protection.Delete the text in this section and replace with the following:Openings
from a private garage directly into a room used for sleeping purposes shall not
be permitted.Other openings between the
garage and residence shall be equipped with self-closing, tight fitting solid
wood doors not less than one and three-eighth inches (35 mm) in thickness,
solid or honeycomb core steel doors not less than one and three-eighth inches
(35 mm) thick or self-closing, tight fitting 20-minute fire-rated doors.

(4)R302.6 Dwelling/Garage Fire Separation Required.Delete the text of this section and replace
with the following: The garage shall be separated from the
residence and its attic area by not less than five-eighth inch (15.9 mm) type x
gypsum board or equivalent applied to the garage side.Garages beneath habitable space shall be
separated from all habitable rooms above by not less than five-eighth inch
(15.9 mm) type x gypsum board or equivalent.Where separation is a floor-ceiling assembly, the structure supporting
the separation shall also be protected by not less than five-eighth inch (15.9
mm) type x gypsum board or equivalent.Garages located less than three feet (914 mm) from a dwelling unit on
the same lot shall be protected with not less than five-eighth inch (15.9 mm)
type x gypsum board or equivalent applied to the interior side of exterior
walls that are within this area.Openings in these walls shall be regulated by section R309.1.This provision does not apply to garage walls
that are perpendicular to the adjacent dwelling unit wall.Table
R302.6.Delete the text of table
R302.6 and replace with the following:

Table R302.6

DWELLING/GARAGE
SEPARATION

SEPARATION

MATERIAL

From the residence and attics

Not less than five-eighth-inch Type X
gypsum board or equivalent applied to the garage side

From all habitable rooms above the garage

Not less than five-eighth-inch Type X
gypsum board or equivalent applied to the interior side of exterior walls
that are within this area

Structure(s) supporting floor/ceiling
assemblies used for separation required by this section

Not less than five-eighth-inch gypsum
board or equivalent

Garages located less than three feet from
a dwelling unit on the same lot

Not
less than five-eighth-inch gypsum board or equivalent

(5)R302.13Fire Protection of Floors.Delete the text of this section without
substitution.

C.Section R303 through Section R308.See these sections of the
IRC. Delete the text in this section
R303.4Mechanical Ventilation and
replace with the following: The dwelling unit ventilation shall be in
accordance with 14.9.2 NMAC.

D.Section R309.See this section of the IRC except as provided
below: R309.1 Floor Surface.Delete the text of this section of the IRC
and replace with the following language.Garage floor surfaces shall be of approved noncombustible material.The area of floor used for parking of
automobiles or other vehicles shall be sloped a minimum of one percent to
facilitate the movement of liquids to a drain or toward the main vehicle entry
doorway. The approach apron shall be
recessed a minimum three-fourths inch at the vehicle doorways to prevent entry
of storm water into the garage.

E.Section R311 Means of Egress.See
these section of the IRC except as provided below.R311.7.5Stair Treads and Risers. Stair treads and risers shall meet the
requirements of this section. For the
purposes of this section, dimensions and dimensioned surfaces shall be exclusive
of carpets, rugs or runners.

F.Section R311.7.5.1 Risers. The riser height shall be not more than eight inches
(203mm). The riser shall be measured
vertically between leading edges of the adjacent treads. The greatest riser height within any flight of
stairs shall not exceed the smallest by more than three-eighth inches (9.5 mm).
Risers shall be vertical or sloped from
the underside of the nosing of the tread above at an angle not more than 30
degrees (0.51 rad) from the vertical. Open
risers are permitted provided that the openings located more than 30 inches
(762 mm), as measured vertically, to the floor or grade below do not permit the
passage of a four-inch-diameter (102 mm) sphere. Exceptions: (1) The opening
between adjacent treads is not limited on spiral stairways. (2) The riser
height of spiral stairways shall be in accordance with Section R311.7.10.1.

G.Section R311.7.5.2 Treads. The tread depth shall be not less than nine inches
(229mm). The tread depth shall be
measured horizontally between the vertical planes of the foremost projection of
adjacent treads and at a right angle to the tread’s leading edge. The greatest tread depth within any flight of
stairs shall not exceed the smallest by more than three-eighths inch (9.5 mm).

H.Section R311.7.7.3 Grip-size.Delete the text of the first sentence of this
section of the IRC and replace with the following:All required handrails shall be of one of the
following types or the shape shall provide equivalent graspability.
In item #1 Type I delete the word “of”
after the “words maximum cross section” and before “dimension”.

I.Section R313 Automatic Fire Sprinkler Systems.Delete the text of sections
R313.1 and R313.2 and replace with the following:R313.1
Automatic fire sprinklers systems in townhouses and one- and two-family
dwellings are not required when the units are not more than three stories above
grade plane in height and that have separate means of egress and their
accessory structures.

J.Section R312 through Section R319.See these sections of the IRC.

K.Section 320
Accessibility. Delete the text of this section
and see Section 310.5 of the IBC.

L.Section R321 through section 325 See these sections of the IRC.

M.Section R326 Swimming PoolsDelete
the text of this section and see 14.7.3.24 NMAC.

[14.7.3.11
NMAC - Rp, 14.7.3.11 NMAC, 11/15/2016]

14.7.3.12CHAPTER 4 - FOUNDATIONS:Section
R403 Footings. See this section of the IRC except
as provided below.

A.R403.1.3.2See this section of the
IECC and add the following sentence to the end of the section. Where the slabs-on-ground are cast
monolithically and rigid insulation is used as a forming material, a minimum of
one and one-half inch rigid insulation shall be used. Where sandy, silty sand or sandy gravel soils
are present, rigid insulation shall not be used as a forming material. Forms must be constructed to prevent the
possibility of failure or collapse.Forms shall be constructed and maintained so that the finished concrete
complies with Section R401.2.

B.R403.1.4Delete the text of this section and
replace with the following language. All
exterior footings shall be placed at least 12 inches (305 mm) below grade. Where applicable, the depth of footings shall
also conform to Sections R403.1.4.1 and R403.1.4.2.

(1)Section R602.1.3 Structural Log Members.Delete the text of this section and replace
with the following; Native timber. Rough-sawn lumber,
timbers, and vigas, used for any load bearing
application shall be identified by a grade mark of an approved lumber
grading or inspection agency. In lieu of a grade mark, on the material, a certificate of
inspection as to species and grade, issued by a lumber-grading or inspection
agency meeting the requirements of this section.A grading report issued by an engineer or architect
will be accepted.

(2)R602.3
Design and Construction.Add the following to this section: Structural wall sheathing shall be
fastened directly to structural framing members and plywood or oriented strand
board shall have a one-eighth inch space at panel edge and end joints.(3)R602.3.1
See this section as follows except delete exception number two.

(4)R602.3.4
Bottom (sole) plate.Delete this section as follows and replace with the
following.Studs shall have full bearing on a
nominal two-by (51 mm) or larger plate or sill having a width at least equal to
the width of the studs.Two inch (51 mm)
by six inch (152 mm) or wider exterior wall bottom or sill plates may be
cantilevered a maximum of one and one-half (38 mm) inches from concrete
slab-on-grade to accommodate slab-on-grade perimeter insulation if the
remaining bearing is sufficient to carry the structural load.Anchor bolts shall be placed a minimum of two
inches from the exterior edge of the concrete.Two inch by four inch or wider exterior wall bottom or sill plates may
be cantilevered a maximum of half inches from concrete slab-on-grade to
accommodate slab-on-grade perimeter insulation if the remaining bearing is
sufficient to carry the structural load.Anchor bolts shall be placed a minimum of two inches from the exterior
edge of the concrete.

(5)Figure
R602.7.2 Rim Board Header Construction Figure: Figure detail is required with the exception
of “where bearing distance is less than one and one-half inches” shall be
deleted.

(6)R602.12.1
Delete section and substitute as follows: Braced wall line spacing shall be required
per section 602.10.1.3. When interior
braced wall lines are required per Table
602.10.1.3, the required braced wall panels for the interior shall be per
section R602.10.4.

(7)R602.12 (3) Delete “10 feet (3048 mm)” and
insert 12 feet.

C.Section R603 through Section R610.See these sections of the
IRC.

[14.7.3.14
NMAC - Rp, 14.7.3.14 NMAC, 11/15/2016]

14.7.3.15CHAPTER 7 - WALL COVERING:

A.Section R701 and Section R702.See these sections of the
IRC.

B.Section R703 Exterior covering.See this section of the IRC
except as follows.

(1)Section R703.7.2 Plaster.Insert the following at the end of the second
paragraph:Plastering with portland cement plaster shall be not less than three coats
where applied over metal lath or wire lath and shall be not less than two coats
where applied over masonry, concrete, pressure-preservative treated wood or
decay-resistant wood as specified in Section R317.1 or gypsum backing. If the plaster surface is completely covered
by veneer or other facing material or is completely concealed, plaster application
need be only two coats, provided the total thickness is as set forth in Table R702.1
(1).On wood-frame construction with an on-grade floor slab system, exterior
plaster shall be applied to cover, but not extend below, lath, paper and
screed. All residual plaster or stucco
material that accumulates at the base of the wall shall be removed before it is
allowed to cure and no horizontal plaster or stucco material shall remain on
the adjacent grade, footing, footing trench or, when provided, weep screed.All residual stucco material shall be removed
from roof surfaces and roof substrates before it is allowed to cure. The proportion of aggregate to cementitious
materials shall be as set forth in Table R702.1(3).Exception:Exterior plaster may be continued below the
weep screed to below grade provided there is a complete break in the drainage
plane of the building at the location of the horizontal weep screed.Weep holes in the screed shall not be plugged
during the application of plaster materials used to cover foundation
insulation.

(2)Section
R703.7.2.1 Weep screeds.Delete the text of this section of the IRC
and substitute with the following:When
an approved acrylic based exterior finish stucco system or acrylic based color
coat is applied, a minimum 0.019 inch (0.48 mm) (No. 26 galvanized sheet gage),
corrosion-resistant weep screed or plastic weep screed, with a minimum vertical
attachment flange of three half inches (89 mm) shall be provided at or below
the foundation plate line on exterior stud wall in accordance with ASTM C
926.The weep screed shall be placed a
minimum of four inches (51mm) above the earth or half inch 13 mm above paved
areas and shall be of a type that will allow trapped water to drain to the
exterior of the building.The
weather-resistant barrier shall lap the attachment flange.The exterior lath shall lap the attachment
flange of the weep screed.Weep screeds
are not required under covered porches or covered patios.

(3)Section R703.7.3 Water-resistive barriers.Delete this section as follows and
replace with the following.Water-restive
barriers shall be installed as required in Section
R703.2 and where applied over wood-based sheathing, shall include a
water-resistive vapor-permeable barrier with performance at least equivalent to
two layers of Grade D paper. Such felt
or material shall be applied horizontally, with the upper layer lapped over the
lower layer not less than two inches (51mm). Where vertical joints occur, the material and
or felt shall be lapped not less than six inches (152mm).

[14.7.3.15 NMAC - Rp,
14.7.3.15 NMAC, 11/15/2016]

14.7.3.16CHAPTER 8 - ROOF-CEILING CONSTRUCTION:See this section of the IRC.R806.5
Unvented attic and unvented enclosed rafter assemblies. See this section as
follows except delete condition number four.And note 5.1.3.as follows where both
air-impermeable and air permeable insulation are provided, the air-impermeable
insulation shall be applied in direct contact with the underside of the
structural roof sheathing in accordance with Item 5.1.1 and shall not be
required to exceed the minimum R-values provided by low-density foam. The air-permeable insulation shall be
installed directly under the air-impermeable insulation.

[14.7.3.16
NMAC - Rp, 14.7.3.16 NMAC, 11/15/2016]

14.7.3.17CHAPTER 9 - ROOF ASSEMBLIES:

A.Section
R901 through Section R902:See these
sections of the IRC.

B.Section
R903:See this section of the IRC
except as provided below.

(1)Section R903.2.1 Locations.Approved reglets or
an approved flashing shall be installed at wall and roof intersections,
wherever there is a change in roof slope or direction and around roof openings.
Where flashing is of metal, the metal
shall be corrosion resistant with a thickness of not less than 0.019 inch (0.5
mm) (No. 26 galvanized sheet).

(2)Section R903.3Plastered parapets.Delete
the text of this section and replace with the following: Plastered parapets shall require a seamless
but permeable waterproof cover or weather barrier, capping the entire parapet
and wrapping over each side.The cover
shall extend past any break from the vertical a minimum of four inches on the
wall side.On the roof side, the cover
shall properly lap any rising roof felts or membranes and be properly sealed. A layer of furred expanded metal lath shall be
installed over the cover before plaster or stucco is applied. The lath shall extend past any break from the
vertical on the wall side a minimum of five inches and on the roof side, the
same distance as the cover below, allowing for plaster stops or seals. No penetrating fasteners are allowed on the
horizontal surface of parapets.

C.Section R904:See this section of the IRC except add the
following new section: Section R904.5
Loose granular fill.Pumice and other
granular fill type materials are not permitted in roof assemblies.

D.Section R905:See this section of the IRC except add the
following new sections.

(1)Section R905.9.4 Roof deck transitions.Add new section to the IRC as follows: Where roof sheathing is overlapped to create
drainage “crickets” or valleys to canales, taperboard or equivalent shall be used to transition
between the two deck levels to create a uniform substrate.

(2)Section R905.9.5 Canales and scuppers.All canales and
scuppers must have a metal pan lining extending six inches minimum past the
inside of the parapet and six inches minimum to each side of the canale or scupper opening.All canales or scuppers must have positive
drainage.

(3)Section R905.11.4 Modified bitumen roofing.Add new section to the IRC as follows: Where
roof sheathing is overlapped to create drainage “cricket” or valleys to canales, taperboard or equivalent
shall be used to transition between the two deck levels to create a uniform
substrate.

(4)Section R905.12.4 Thermoset single-ply
roofing.Add new section to the IRC
as follows: Where roof sheathing is
overlapped to create drainage “crickets” or valleys to canales,
taperboard or equivalent shall be used to transition
between the two deck levels to create a uniform substrate.

(5)Section R905.13.4 Thermoplastic single-ply
roofing.Add new section to the IRC
as follows: Where roof sheathing is
overlapped to create drainage “crickets” or valleys to canales,
taperboard or equivalent shall be used to transition
between the two deck levels to create a uniform substrate.

E.Section R908.3.1.1 Re-covering versus
replacement.Delete the text of
section R907.3 and substitute with the following:New roof covering shall not be installed
without first removing existing roof coverings where any of the following
conditions occur.

(1)Where
the existing roof or roof covering is water soaked or has deteriorated to the
point that the existing roof or roof covering is not adequate as a base for
additional roofing.

(3)Where
the existing roof has two or more applications of any type of roof covering.

(4)Where
pumice or other granular fill are present, existing roofing and granular fill
must be removed prior to re-roofing.

[14.7.3.17 NMAC - Rp,
14.7.3.17 NMAC, 11/15/2016]

14.7.3.18CHAPTER 10 - CHIMNEYS AND FIREPLACES:See this chapter of the IRC.

[14.7.3.18
NMAC - Rp, 14.7.3.18 NMAC, 11/15/2016]

14.7.3.19CHAPTER 11 - ENERGY EFFICIENCY:Delete this chapter of the IRC and see 14.7.6
NMAC, the NMECC.

[14.7.3.19
NMAC - Rp, 14.7.3.19 NMAC, 11/15/2016]

14.7.3.20CHAPTERS 12 THROUGH 23 - MECHANICAL:Delete
these chapters of the IRC and see 14.9.2 NMAC.

[14.7.3.20
NMAC - Rp, 14.7.3.20 NMAC, 11/15/2016]

14.7.3.21CHAPTER 24 - FUEL GAS:Delete
this chapter of the IRC and see the NMMC.

[14.7.3.21
NMAC - Rp, 14.7.3.21 NMAC, 11/15/2016]

14.7.3.22CHAPTERS 25 THROUGH 33 - PLUMBING:Delete these chapters of the IRC and see the NMPC.

[14.7.3.22
NMAC - Rp, 14.7.3.22 NMAC, 11/15/2016]

14.7.3.23CHAPTERS 34 THROUGH 43 -
ELECTRICAL:Delete these chapters of the
IRC and see the NMAC.

[14.7.3.23
NMAC - Rp, 14.7.3.23 NMAC, 11/15/2016]

14.7.3.24CHAPTER 42 - SWIMMING POOLS.Delete these of chapter of
the IRC and replace with the following.

A.SectionR4201.1 General.The provisions of this appendix shall control the design and construction
of swimming pools, spas and hot tubs installed in or on the lot of a one- or
two-family dwelling.R4201.2Pools inflood hazard areas.Pools that are located in flood hazard areas
established by Table R301.2(1), including above-ground pools, on-ground pools
and in-ground pools that involve placement of fill, shall comply with Sections
R4201.2.1 or R4201.2.2. Exception:Pools
located in riverine flood hazard areas which are outside of designated
floodways.R4201.2.1 Pools
located in designated floodways.Where pools are located in designated
floodways, documentation shall be submitted to the building official, which
demonstrates that the construction of the pool will not increase the design
flood elevation at any point within the jurisdiction.R4201.2.2 Pools located wherefloodways have not been designated.Where pools are located where design flood
elevations are specified but floodways have not been designated, the applicant
shall provide a floodway analysis that demonstrates that the proposed pool will
not increase the design flood elevation more than one foot (305 mm) at any
point within the jurisdiction.

B.Section R4202.1 Definitions. For the purposes of these requirements, the terms used shall be defined
as follows.

(1)ABOVE-GROUND/ON-GROUND POOL.See “Swimming pool.”

(2)BARRIER.A fence, wall, building wall
or combination thereof which completely surrounds the swimming pool and
obstructs access to the swimming pool.

(3)HOT TUB.See “Swimming pool.”

(4)IN-GROUND POOL.See “Swimming pool.”

(5)RESIDENTIAL.That which is situated on the premises of a
detached one- or two-family dwelling or a one-family townhouse not more than
three stories in height.

(6)SPA, NON-PORTABLE.See “Swimming pool.”

(7)SPA, PORTABLE.A non-permanent structure intended for recreational
bathing, in which all controls, water-heating and water-circulating equipment
are an integral part of the product.

(8)SWIMMING POOL. Any structure
intended for swimming or recreational bathing that contains water over 24
inches (610 mm) deep. This includes
in-ground, above-ground and on-ground swimming pools, hot tubs and spas.

(9)SWIMMING POOL, INDOOR.A swimming pool which is
totally contained within a structure and surrounded on all four sides by the
walls of the enclosing structure.

(10)SWIMMING POOL, OUTDOOR.Any swimming pool which is
not an indoor pool.

C.SectionR4203.1 In-ground pools.In-ground
pools shall be designed and constructed in conformance with ANSI/NSPI-4 as
listed in section R4208.R4203.2
Above-ground and on-ground pools.Aboveground and on-ground pools shall be designed and constructed in
conformance with ANSI/NSPI-4 as listed in SectionR4208.R4203.3 Pools in flood hazard
areas.In flood hazard areas established
by Table R301.2 (1), pools in coastal high hazard areas shall be designed and
constructed in conformance with ASCE 24.

D.Section R4204.1 Permanently
installed spas and hot tubs. Permanently installed spas and hot
tubs shall be designed and constructed in conformance with ANSI/NSPI-3. R4204.2 Portable spas
and hot tubs. Portable spas and hot tubs shall be designed and
constructed in conformance with ANSI/NSPI-6.

E.Section R4205.1Barrier Requirements.The
provisions of this chapter shall control the design of barriers for residential
swimming pools, spas and hot tubs. These
design controls are intended to provide protection against potential drownings
and near-drownings by restricting access to swimming pools, spas and hot tubs.R4205.2 Outdoor swimming pool. An outdoor
swimming pool, including an in-ground, above-ground or on-ground pool, hot tub
or spa shall be surrounded by a barrier which shall comply with the following:

(1)The top of the barrier shall be at least 48
inches (1219 mm) above grade measured on the side of the barrier which faces
away from the swimming pool. The maximum
vertical clearance between grade and the bottom of the barrier shall be two
inches (51 mm) measured on the side of the barrier which faces away from the
swimming pool. Where the top of the pool
structure is above grade, such as an above-ground pool, the barrier may be at
ground level, such as the pool structure, or mounted on top of the pool
structure. Where the barrier is mounted
on top of the pool structure, the maximum vertical clearance between the top of
the pool structure and the bottom of the barrier shall be four inches (102 mm).

(2)Openings in the barrier shall not
allow passage of a four-inch-diameter (102 mm) sphere.

(3)Solid barriers which do not have openings,
such as a masonry or stone wall, shall not contain indentations or protrusions
except for normal construction tolerances and tooled masonry joints.

(4)Where the barrier is composed of
horizontal and vertical members and the distance between the tops of the
horizontal members is less than 45 inches (1143 mm), the horizontal members
shall be located on the swimming pool side of the fence. Spacing between vertical members shall not
exceed thirteen-fourth inches (44 mm) in width. Where there are decorative cutouts within
vertical members, spacing within the cutouts shall not exceed thirteen-fourth
inches (44 mm) in width.

(5)Where the barrier is composed of
horizontal and vertical members and the distance between the tops of the
horizontal members is 45 inches (1143 mm) or more, spacing between vertical
members shall not exceed four inches (102 mm). Where there are decorative cutouts within
vertical members, spacing within the cutouts shall not exceed thirteen-fourth
inches (44 mm) in width.

(6)Maximum mesh size for chain link
fences shall be a twenty-one fourth-inch (57 mm) square unless the fence has
slats fastened at the top or the bottom which reduce the openings to not more
than thirteen-fourth inches (44 mm).

(7)Where the barrier is composed of
diagonal members, such as a lattice fence, the maximum opening formed by the
diagonal members shall not be more than thirteen-fourth inches (44 mm).

(8)Access gates shall comply with the
requirements of Section R4205.2, Items 1 through 7, and shall be equipped to
accommodate a locking device. Pedestrian
access gates shall open outward away from the pool and shall be self-closing
and have a self-latching device. Gates
other than pedestrian access gates shall have a self-latching device. Where the release mechanism of the
self-latching device is located less than 54 inches (1372 mm) from the bottom
of the gate, the release mechanism and openings shall comply with the
following:

(a)8.1. The release mechanism shall be located on the
pool side of the gate at least three inches (76 mm) below the top of the gate;
and

(b)8.2. The gate and barrier shall have no opening
larger than half-inch (12.7 mm) within 18 inches (457 mm) of the release
mechanism.

(9)Where a wall of a dwelling serves as
part of the barrier, one of the following conditions shall be met:

(a)9.1. The pool shall be equipped with a powered
safety cover in compliance with ASTM F 1346; or

(b)9.2. Doors with direct access to the pool through
that wall shall be equipped with an alarm which produces an audible warning
when the door and/or its screen, if present, are opened. The alarm shall be listed and labeled in
accordance with UL 2017. The
deactivation switch(es) shall be located at least 54
inches (1372 mm) above the threshold of the door; or

(c)9.3. Other means of protection, such as
self-closing doors with self-latching devices, which are approved by the
governing body, shall be acceptable as long as the degree of protection
afforded is not less than the protection afforded by Item 9.1 or 9.2 described
above.

(10)Where an above-ground pool structure is
used as a barrier or where the barrier is mounted on top of the pool structure, and the means of access is a ladder or steps:

(a)10.1. The ladder or steps shall be capable of being
secured, locked or removed to prevent access; or

(b)10.2. The ladder or steps shall be surrounded by a
barrier which meets the requirements of Section R4205.2, Items 1 through 9. When the ladder or steps are secured, locked
or removed, any opening created shall not allow the passage of a
4-inch-diameter (102 mm) sphere.

F.Section R4205.3 Indoor swimming pool. Walls surrounding an indoor swimming pool
shall comply with Section R4205.2, Item 9. R4205.4 Prohibited locations.
Barriers shall be located to prohibit permanent structures, equipment or
similar objects from being used to climb them. R4205.5 Barrier exceptions.
Spas or hot tubs with a safety cover which complies with ASTM F 1346, as listed
in Section R4207, shall be exempt from the provisions of this appendix.

G.R4206Entrapment
Protection for Swimming Pool and Spa.R4206.1 General. Suction outlets shall be designed and
installed in accordance with ANSI/APSP-7.

14.7.3.25CHAPTER 44 - REFERENCED STANDARDS:See this section of the IRC.

[14.7.3.25
NMAC - Rp, 14.7.3.24 NMAC, 11/15/2016]

14.7.3.26APPENDIX J - EXISTING BUILDINGS AND STRUCTURES:See this section Of the IRC except as provided
below:

A.Section AJ101 Purpose and intent.See this section of the IRC.

B.Section AJ102 Compliance.See this section of the IRC except add the following new section:Section AJ102.4.3 Compliance.When alterations and/or repairs are made to
exterior stud framed walls of existing bedrooms and exterior wall framing
adjoining the window is exposed, then the replacement window shall be made to
comply with section R310.

[14.7.3.26
NMAC - Rp, 14.7.3.25 NMAC, 11/15/2016]

14.7.3.27APPENDIX S STRAWBALE CONSTRUCTION: See this section of the IRC except
as provided below:

A.Construction documents detailing the structural
design of the structure shall be prepared by a licensed New Mexico architect or
structural engineer.The architect or
engineer stamp must be affixed to each page of the plans detailing construction
of the structure with the design processionals signature and date affixed over
each stamp.

B.Prior to issuance of a certificate of occupancy by
the construction industries division, an inspection report must be provided to
the general construction inspector by the licensed New Mexico architect or
structural engineer.The report shall
attest to the building's structural integrity and conformance with the
permitted drawings

[14.7.3.25
NMAC - N, 11/15/2016]

14.7.3.28APPENDIX Q TINY HOUSES:

A.Section AQ101 - GENERAL

(1)Section AQ101.1 Scope.This appendix shall be applicable to tiny
houses used as single dwelling unitsproviding complete independent living
facilities for one or more persons, including permanent provisions for living,
sleeping, eating, cooking, and sanitation and placed on a permanent
foundation.Tiny houses shall comply
with this code except as otherwise stated in this appendix. Tiny
houses constructed in New Mexico or constructed outside New Mexico and
transported into New Mexico shall be inspected to comply with New Mexico
Residential Code requirements for instate or out of state production of dwelling
units.This shall include Appendix Q of
the New Mexico Residential Code.Tiny houses constructed on a chassis with
permanent axle shall be considered recreational vehicles and shall meet codes
for and be licensed as recreational vehicles so long as the axle
remain in place.If axle are
removed and the unit placed on supports (foundation) the unit must comply with
code requirements for tiny houses placed on a permanent foundations. Tiny
houses placed upon a permanent foundation shall be constructed to comply with
New Mexico Building Residential Codes including Appendix Q (Tiny Houses) of the
Residential Code.

(2)Section AQ102.1 General
Definitions.The following words and
terms shall, for the purposes of this appendix, have the meanings shown herein.Refer to Chapter 2 of this code for general
definitions.

(a)Emergency egressA skylight, roof window, or other emergency egress
opening designed and installed to satisfy the emergency escape and rescue
opening requirements in Section R310.2.

(b)Landing platform.A landing measuring two treads deep and two
risers tall, provided as the top step of a stairway or ladder accessing a loft.

(c)Loft.A floor level located more than 30 inches
(762 mm) directly above the main floor and open to the main floor on at least
one side with a ceiling height of less than 6 feet 8 inches (2032 mm), used as
a living or sleeping space.The total
area of all lofts shall not exceed 40 percent of the floor area.

(d)Tiny house.A dwelling that is 400
square feet (37 m2) or less in floor area excluding lofts, and does not include
recreational vehicles.

B.Section AQ103 - CEILING HEIGHT

AQ103.1 Minimum ceiling height.Habitable space and hallways in tiny houses shall have a ceiling height
of not less than 6 feet 8 inches (2032 mm).Bathrooms, toilet rooms, and kitchens shall have a ceiling height of not
less than 6 feet 4 inches (1930 mm).Obstructions shall not extend below these minimum ceiling heights
including beams, girders, ducts, lighting and other obstructions.Exception: Ceiling heights in lofts are permitted to be
less than 6 feet 8 inches (2032 mm).

C.Section AQ104 LOFTS

(1)Section AQ104.1 Minimum loft area and
dimensions.Lofts used as a sleeping or living space
shall meet the minimum area and dimension requirements of Sections AQ104.1.1
through AQ104.1.3.

(a)Section
AQ104.1.1 Minimum area.Lofts shall
have a floor area of not less than 35 square feet (3.25 m2).

(b)Section
AQ104.1.2 Minimum dimensions.Lofts
shall be not less than 5 feet (1524 mm) in any horizontal dimension.

(c)Section AQ104.1.3 Height effect on loft area.Portions of a loft with a sloping ceiling
measuring less than 3 feet (914 mm) from the finished floor to the finished
ceiling shall not be considered as contributing to the minimum required area
for the loft.Exception:Under gable roofs with a minimum
slope of 6:12. portions of a loft with a sloping
ceiling measuring less than 16 inches (406 mm) from the finished floor to the
finished ceiling shall not be considered as contributing to the minimum
required area for the loft.

(2)SectionAQ104.2 Loft access.The access to and primary egress from lofts
shall be any type described in Sections AQ104.2.1 through AV104.2.4.

(a)Section AQ104.2.1 Stairways.Stairways accessing lofts shall comply
with this code or with Sections AQ104.2.1.1 through AQ104.2.1.5.

(i)Section AQ104.2.1.1 Width.Stairways accessing a loft shall not be
less than 17 inches (432 mm) in clear width at or above the handrail. The
minimum width below the handrail shall be not less than 20 inches (508 mm).

(ii)SectionAQ104.2.1.2 Headroom.The headroom in stairways accessing a loft
shall be not less than 6 feet 2 inches (1880 mm) as measured vertically from a
sloped line connecting the tread or landing platform nosings
in the middle of their width.

(iii)Section AQ104.2.1.3 Treads and
risers.Risers for stairs accessing
a loft shall be not less than 7 inches (178 mm) and not more than 12 inches
(305 mm) in height. Tread depth and riser height shall be calculated in
accordance with one of the following formulas:(a)The
tread depth shall be 20 inches (508 mm) minus 4/3 of the riser height.(b)The riser height shall be 15 inches (381 mm) minus 3/4 of the tread
depth.

(iv)Section AQ104.2.1.4 Landing
platforms.The top tread and riser
of stairways or ladders accessing lofts shall be constructed as a landing
platform where the loft ceiling height is less than 6 feet 2 inches (1880 mm)
at the point where the stairway or ladder meets the loft.

(vi)SectionAQ104.2.1.6 Stairway guards.Guards at open sides of
stairways shall comply with Section R312.1.

(b)SectionAQ104.2.2 Ladders.Ladders accessing lofts shall comply with
Sections AQ104.2.1 and AQ104.2.2, including the requirements for handrails in
section R311.7.8, and R308.4.6 glazing adjacent to stairs and ramps, and shall
be permanently attached to the loft structure by a device that prevents
movement during use.Attachment shall
not be accomplished by use of toenails or nails subject to withdrawal.

(i)SectionAQ104.2.2.1Size
and capacity.Ladders accessing lofts shall have a rung
width of not less than 12 inches (305 mm) and rungs shall be spaced with 10
inches (254mm) minimum to 14 inches (356mm) maximum spacing between rungs.Floor decking of lofts accessed by ladders
shall be no more than 8½ feet above the main level floor.Ladders shall be capable of supporting a 200
pound (75 kg) load on any rung.Rung
spacing shall be uniform within 3/8-inch (9.5 mm).

(ii)SectionAQ104.2.2.2
Incline.Ladders shall be installed at 70 to 80 degrees from horizontal.

(e)SectionAQ104.2.5 Loft Guards.Loft guards shall be located along the open
side of lofts.Loft guards shall not be
less than 36 inches (914 mm) in height or one-half of the clear height to the
ceiling, whichever is less.

D.Section AQ105 - EMERGENCY ESCAPE AND RESCUE OPENINGS

AQ105.1
General.Tiny houses shall meet the requirements of
Section R310 for emergency escape and rescue openings including lofts of 35
square feet or greater.Egress roof
access windows in lofts shall be deemed to meet the requirements of Section
R310 where installed with the bottom of their opening no more than 44 inches
(1118 mm) above the loft floor.

[14.7.3.28
NMAC - N, 01/15/2018]

HISTORY OF 14.7.3 NMAC:

Pre-NMAC History:Material in this part was derived from that
previously filed with the commission of public records - state records center
and archives as: